Light fixture sign

ABSTRACT

A light fixture sign includes a sign message structure including letter-shaped structures. The light fixture sign includes an illumination source to generate light to be projected through a front surface of the letter-shaped structures. The light fixture sign includes at least one reflective mirror having a first surface attached over a back surface of the letter-shaped structures and a reflective surface opposite the first surface to reflect light.

CROSS-REFERENCE TO RELATED APPLICATIONS

This Application is a Continuation-In-Part of U.S. application Ser. No.16/866,126, filed May 4, 2020, which is a Divisional of U.S. applicationSer. No. 16/552,611, filed Aug. 27, 2019, now allowed and issuing asU.S. Pat. No. 10,643,506 on May 5, 2020, which is a Divisional of U.S.application Ser. No. 16/031,292, filed Jul. 10, 2018, now U.S. Pat. No.10,395,569, Issued Aug. 27, 2019, which is a Divisional of U.S.application Ser. No. 15/356,829, filed Nov. 21, 2016, now U.S. Pat. No.10,049,604, Issued Aug. 14, 2018, which is a Divisional of U.S.application Ser. No. 15/657,407, filed Jul. 24, 2017, which claims thebenefit of the filing date of U.S. Provisional Patent Application Ser.No. 62/365,829, filed Jul. 22, 2016, the entire teachings of which areincorporated herein by reference.

BACKGROUND

Building codes require that public spaces have electrically operatedemergency lighting and signage in case of a power outage so that theoccupants of the building can evacuate safely. Such emergency lightingand signage may involve an auxiliary power source that functions duringa power outage. There are a variety of light fixture exit signs used inbuildings to provide emergency exit notifications. These exit signs aremade of a variety of materials, including various metals and plastics,which are mounted on a building ceiling or wall. The United Statesnationally requires exit signs to indicate the word “EXIT”, and the exitsigns may also include directional arrows (e.g., right arrow, leftarrow, both right and left arrows). All exit signage letters and arrowsare Code required to be illuminated. Canada and other countriesthroughout the United Kingdom require that the exit signs use astandardized “running man” symbol along with arrows showing direction. Aprojected “Exit” message may be obtained by directing light from a lightsource through an image forming apparatus, such as a stencil. These exitsigns are produced in many different directional arrow configurationsthat require excessive production of various configurations and canresult in potential mistakes in shipping.

Existing light fixture signs are typically mounted in some exposedlocation and are subject to accidental damage, intentional vandalism,collection of dirt and grime, and in many cases are not aestheticallypleasing to look at. Because of their general exposure, light fixturesigns are vulnerable to breakage of, or tampering with, the lightitself, with possible resultant battery pack disconnecting or drainingof the stored power. The result of either would be an unanticipatedabsence of emergency lighting during an outage of normal power.Additionally, many light fixture signs do not have an aestheticallypleasing appearance. When thousands of dollars have been spent toestablish a pleasing decor in an office, lobby, etc., the appearance ofsuch a sign can be glaringly out of place.

SUMMARY

One embodiment is directed to a concealed light fixture sign. The lightfixture sign includes a flange having stencil openings formed thereinthat define a message. A container extends from a rear surface of theflange and provides light through the stencil openings. The container isconfigured to be installed completely within a recess behind a mountingsurface with the flange positioned substantially flush with the mountingsurface. Translucent inserts positioned within the stencil openings areremovable to provide access to an interior of the container afterinstallation of the light fixture sign.

Another embodiment is directed to a light fixture sign that includes asign message structure including letter-shaped structures. The lightfixture sign includes an illumination source to generate light to beprojected through a front surface of the letter-shaped structures. Thelight fixture sign includes at least one reflective mirror having afirst surface attached over a back surface of the letter-shapedstructures and a reflective surface opposite the first surface toreflect light.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of embodiments and are incorporated in and constitute apart of this specification. The drawings illustrate embodiments andtogether with the description serve to explain principles ofembodiments. Other embodiments and many of the intended advantages ofembodiments will be readily appreciated as they become better understoodby reference to the following detailed description. The elements of thedrawings are not necessarily to scale relative to each other. Likereference numerals designate corresponding similar parts.

FIG. 1 is a diagram illustrating a perspective view of a light fixturesign prior to installation in a wall according to one embodiment.

FIG. 2 is a diagram illustrating a perspective view of a rear side ofthe light fixture sign shown in FIG. 1 according to one embodiment.

FIG. 3 is a diagram illustrating a perspective view of the light fixturesign shown in FIG. 1 after installation in a wall according to oneembodiment.

FIG. 4 is a diagram illustrating a front view of the light fixture signshown in FIG. 1 according to one embodiment.

FIG. 5 is a diagram illustrating a side view of the light fixture signshown in FIG. 1 according to one embodiment.

FIG. 6 is a diagram illustrating a perspective view of a light fixturesign prior to installation in a concrete wall according to oneembodiment.

FIG. 7 is a diagram illustrating a perspective view of a light fixturesign mounted on a ceiling according to one embodiment.

FIG. 8 is a diagram illustrating a side view of the ceiling-mountedlight fixture sign shown in FIG. 7 according to one embodiment.

FIG. 9 is a diagram illustrating a side view of the ceiling-mountedlight fixture sign shown in FIG. 7 according to another embodiment.

FIG. 10 is a diagram illustrating a perspective view of a light fixturesign with a removable light source apparatus prior to installation in awall according to one embodiment.

FIG. 11 is a diagram illustrating a front view of the light fixture signshown in FIG. 10 with the exit sign face and the clear plastic backingsheet removed according to one embodiment.

FIG. 12 is a diagram illustrating a side view of the light fixture signshown in FIG. 10 according to one embodiment.

FIG. 13 is a diagram illustrating a perspective view of a light fixturesign with a remote light source apparatus according to one embodiment.

FIG. 14 is a diagram illustrating a perspective view of a light fixturesign with removable electroluminescent inserts according to oneembodiment.

FIG. 15 is a diagram illustrating a side view of the light fixture signshown in FIG. 14 according to one embodiment.

FIG. 16 is a diagram illustrating a front view of a light fixture signmounted to a ceiling (ceiling pendant mounted) according to oneembodiment.

FIG. 17 is a diagram illustrating a front view of the light fixture signshown in FIG. 16 with the end of the sign message structure mounted to awall according to one embodiment.

FIG. 18 is a diagram illustrating a perspective view of the lightfixture sign shown in FIG. 16 positioned to be mounted inside an openingin a concrete block wall according to one embodiment.

FIG. 19 is a diagram illustrating a perspective view of the sign messagestructure shown in FIG. 16 mounted to a glass panel (e.g., window)according to one embodiment.

FIG. 20 is a diagram illustrating another perspective view of the signmessage structure shown in FIG. 16 according to one embodiment.

FIG. 21 is a diagram illustrating another view of the sign messagestructure shown in FIG. 20 including reflective mirrors according to oneembodiment.

FIG. 22 is a diagram illustrating internal LEDs of the sign messagestructure shown in FIG. 16 according to one embodiment.

FIG. 23 is a diagram illustrating a section view of a letter of the signmessage structure shown in FIG. 22 according to one embodiment.

FIG. 24 is an exploded perspective view of a letter of the sign messagestructure shown in FIG. 22 according to one embodiment.

FIG. 25 is a diagram illustrating a perspective view of the lightfixture sign shown in FIG. 16 being mounted to a ceiling with themounting system according to one embodiment.

FIG. 26 is a diagram illustrating a perspective view of the lightfixture sign shown in FIG. 25 after being mounted to the ceiling withthe mounting system according to one embodiment.

FIG. 27 is a diagram illustrating a perspective view of the sign messagestructure shown in FIG. 16 with letters and arrows implemented withelectroluminescent panels according to one embodiment.

FIG. 28 is a diagram illustrating a front view of a letter and an arrowof the sign message structure shown in FIG. 27 with the letter and thearrow implemented with separate electroluminescent panels according toone embodiment.

FIG. 29 is a diagram illustrating additional details of the sign messagestructure shown in FIG. 27 with letters and arrows implemented withelectroluminescent panels according to one embodiment.

DETAILED DESCRIPTION

In the following Detailed Description, reference is made to theaccompanying drawings, which form a part hereof, and in which is shownby way of illustration specific embodiments in which the invention maybe practiced. In this regard, directional terminology, such as “top,”“bottom,” “front,” “back,” “leading,” “trailing,” etc., is used withreference to the orientation of the Figure(s) being described. Becausecomponents of embodiments can be positioned in a number of differentorientations, the directional terminology is used for purposes ofillustration and is in no way limiting. It is to be understood thatother embodiments may be utilized and structural or logical changes maybe made without departing from the scope of the present invention. Thefollowing detailed description, therefore, is not to be taken in alimiting sense, and the scope of the present invention is defined by theappended claims. It is to be understood that the features of the variousexemplary embodiments described herein may be combined with each other,unless specifically noted otherwise.

Embodiments disclosed herein are directed to an aesthetically-pleasing,easy-to-install, vandal-resistant, concealed, light fixture sign.Embodiments of the light fixture sign may be used in new construction,and may also be readily used in remodeling or in retrofit circumstancesto provide an aesthetically pleasing sign that can be mounted flush andconcealed in a wall, or mounted on a ceiling. Some embodiments aredirected to a field-modifiable light fixture sign that is adaptable toany configuration, such as an appropriate directional arrowconfiguration for a given installation. The light fixture sign accordingto some embodiments may be concealed completely within a wall or ceilingand still provide the required information.

FIG. 1 is a diagram illustrating a perspective view of a light fixturesign 100 prior to installation in a wall 120 according to oneembodiment. FIG. 2 is a diagram illustrating a perspective view of arear side of the light fixture sign 100 shown in FIG. 1 according to oneembodiment. In the illustrated embodiment, the light fixture sign 100 isa light fixture exit sign. In other embodiments, the light fixture sign100 may be another type of sign. Light fixture sign 100 includes acontainer 102 and a flange 104. The flange 104 includes a front surface108 and a rear surface 109. The container 102 is attached to the rearsurface 109 of the flange 104. In some embodiments, the container 102includes a light source, such as one or more high intensity lightemitting diodes (LEDs), and a battery pack. A power cable 105 isattached to a rear side of the container 102, and is configured toprovide power from an external power source (e.g., the building mains)to elements within the container 102. An emergency power supply providespower for light fixture sign 100 when power is lost to the buildingmains.

The front surface 108 of the flange 104 includes the message “EXIT” instencil form and has opposed indicator “V” shaped cut-outs on oppositesides to indicate a right or a left exit. Specifically, the frontsurface 108 includes stencil openings 110(1)-110(6) (collectivelyreferred to as stencil openings 110). Masks may be used to cover one orboth of the direction indicators (i.e., stencil openings 110(1) and110(6)), which provides a method for customizing the sign in the field.

Common building construction uses wallboard (also referred to as drywallor gypsum board) or other types of panels mounted on studs for thewalls, or on joists for ceilings to define individual occupancy spaces(rooms, halls, etc.). The spaces between the studs or joists behind thepanels are usually void or occupied by insulation. In commercialbuildings and multiple dwellings, some ceilings use panels that fit intometal frames suspended from I-beams or poured concrete layers. For thesake of simplicity, all of these various types of room-defining panelshaving voids behind them will hereafter be referred to as “walls”.

Light fixture sign 100 is configured to be installed in wall 120. Wall120 is supported by studs 122. Wall 120 includes a rectangular-shapedopening 126, which is sized to receive container 102 therein. Pins106(1) and 106(2) extend from the rear surface 109 of the flange 104,and are configured to be inserted into respective holes 124(1) and124(2) in wall 120 to help maintain the installed position of the lightfixture sign 100. After installation, the portion of the rear surface109 of the flange 104 that surrounds the outer perimeter of thecontainer 102 rests against the outer surface of the wall 120, and thefront surface 108 of the flange 104 is flush or nearly flush with theouter finished surface of the wall 120. After installation, the flange104 is the only external part of the light fixture sign 100.

The light fixture sign 100 is a concealed exit sign that allowsinstallation into any of many wall materials. In addition to gypsumboard, other wall materials where the light fixture signs disclosedherein can apply include brick and mortar, wood, concrete, fiberglass,and metal construction. Matching wall finishes may be applied to thewall and the light fixture sign 100, including paint and wall paperfabric coverage. The front surface 108 of the light fixture sign 100 mayinclude a textured finished surface to match any other finished wallmaterials.

After mounting the light fixture sign 1600 into the ceiling or wall,standard mudding of plaster compound and fiberglass taping may beapplied overlapping the perimeter edges of the flush mounting plate andthe ceiling or wall surface. This allows portions of the light fixturesign 1600 to be concealed on the same plane as the finished ceiling orwall surface. Feathering of the thin metal signage face panel blendsinto the ceiling or wall finished surface. A surface coverage, such aspaint, may be applied across both the flush signage panel and thesurrounding ceiling or wall area at the same time.

FIG. 3 is a diagram illustrating a perspective view of the light fixturesign 100 shown in FIG. 1 after installation in a wall according to oneembodiment. After installation, the light fixture sign 100 has anaesthetically pleasing appearance in regard to the desire of architectsand interior designers because it is concealed and blends in with thesurrounding wall surface. The only visible element of the light fixturesign 100 is the letters and arrows themselves. The finished appearanceof the light fixture sign 100 is also benefited since there is no needfor any visible means of fasteners and mounting brackets. The lightfixture sign 100 is mounted flush to the wall 120 or building materialsurface to provide a completely undetectable installation.

Once the finished paint is applied to the front surface 108 and thencured, removable translucent inserts 302(1)-302(6) (collectivelyreferred to as removable translucent inserts 302) in the shape ofletters and arrows can be press fit into place in the stencil openings110(1)-110(6), respectively. In some embodiments, the translucentinserts 302 are red or green in color. In other embodiments, thetranslucent inserts 302 are white in color. Other embodiments mayinclude custom colors authorized by building inspectors.

The arrow-shaped inserts 302(1) and 302(6) may be field selected to beused on a particular building installation location where needed foregress path directional information. During an initial installation, aleft arrow, right arrow, both arrows, or no arrows arrangement isdecided. In some embodiments, the light fixture sign 100 is initiallyconstructed with an arrow-shaped filler or mask that covers thearrow-shaped stencil openings 110(1) and 110(6). During installation, ifan arrow is selected to be viewed and illuminated, that correspondingarrow's filler or mask may be removed in the field at the buildinginstallation location. If an arrow is not needed in a particularinstallation, the arrow-shaped filler or mask remains untouched and thefinished wall covering is applied over that masked area to completelyconceal it from view. Field location decided use of the arrows needed ateach building installation is an improvement over other exit signs thatmust be produced, inventoried, specified correctly and ordered correctlyto match the many different arrow configurations throughout all buildingexit signage locations.

The light fixture sign 100 according to embodiments disclosed hereinmeets National Electrical Code requirements, which require access to theinterior of the electrified lighting fixtures by allowing access andreplacement of all interior electrical components and junction boxwiring terminations. Removal of the translucent inserts 302 providescomplete access to all interior electrical components and junction boxwiring terminations of the light fixture sign 100. Other methods otherthan removable letters may include a solid translucent drop back/slidesideways panel that moves away from the letters and arrows within theenclosure, which would also allow access. In contrast, previous exitsign designs require the dismantling of the exposed constructedenclosure to access the interior for replacement of electricalcomponents and associated junction box wiring terminations.

Previous exit sign designs are visible because of the necessity ofexposed removable panels and exposed mounting bracket canopies to securethose exit signs to the wall/mounting locations. Some previous exit signproducts do not allow field painting of the sign to match the individualbuilding room installation colors and finishes. Field painting ofexisting exit signage may not provide an acceptable high quality or longterm application of paint or finishes desirable. Also, the addition ofany paint or the application of any added layer of finish materials ontothose exposed exit signs may void the manufacturer's UnderwritersLaboratories (UL), or equivalent third party testing organizationtesting facility product listing required by the National ElectricalCodes, subjecting the building owner to liability concerns. Previousexposed exit signs are not Code approved to be concealed, painted andcovered with any field applied matching finishes.

Previous exposed exit signage experiences very high ongoing replacementcosts to building owners. Exposed exit signs are typically an easytarget for vandalism since those enclosures are noticeably visible andare constructed with components parts that suffer damage easily. Damagedexit signs also cause added liability and safety concerns for people toegress the buildings. In contrast, embodiments of the light fixture sign100 provide an improvement in regard to vandalism with the concealedenclosure with no visible fasteners. This design reduces possible damagefrom vandalism since there is no visible exposed enclosure orconstructed parts to attract undesirable attention.

Light fixture sign 100 may be implemented as an electrical exit sign, ora non-electrified self illuminated radium/radiation exit sign, or anyexit sign version that function as Code approved building egress exitsignage. The light fixture sign 100 may be installed in locations thatinclude the typical wall mounting locations near the ceiling and abovedoorways. The light fixture sign 100 may also be installed near thefloor as required in the State of California, which requires an exitsign at the ceiling level and a second same location exit sign at floorlevel. The light fixture sign 100 may also be installed within an actualdoor itself, which is the most centrally direct locating of the actualegress path out of a building. Although exit signage embodiments havebeen discussed, it will be understood that the techniques describedherein are also applicable to other types of signage, such as restroomsignage, do not enter signage, in use signage (e.g., x-ray in use), donot enter signage, Wi-Fi available signage, custom signage, as well asothers.

The light fixture sign 100 may be constructed with integral illuminationlamps, power supplies, emergency lighting battery back-up printedcircuit boards, and battery packs. These components can be used inconjunction with a removal electrical component package assembly that isinserted into the completely installed concealed enclosure and alsoremoved at a later time from a connected electrical raceway conduit(tube) system. The electrical component package may use a keyed guide toallow the package to arrive into the proper position within theenclosure for proper Code required illumination distribution. Thisdesign option allows the package to be removed and accessed at a remotelocation to replace a needed component, and then reinserted back intothe raceway (tube) and arrive back into the proper position within theconcealed enclosure. In this option, a solid permanent translucent panelto illuminate the letters and arrows may be used since access to theinterior of the enclosure is not needed by the use of the removableletters and arrows.

FIG. 4 is a diagram illustrating a front view of the light fixture sign100 shown in FIG. 1 according to one embodiment. FIG. 5 is a diagramillustrating a side view of the light fixture sign 100 shown in FIG. 1according to one embodiment. As shown in FIGS. 4 and 5, the lightfixture sign 100 includes a battery pack 402 and a printed circuit board(PCB) 408, which are both mounted within the container 102 (FIG. 1). ThePCB 408 supports a bank of light emitting diodes (LEDs) 410. A container404 is mounted on a rear external surface of the container 102, andincludes a power transformer 406 and wiring terminations (not shown).The power transformer 406 is electrically connected to the power cable105. An access panel 502 on a rear internal surface of the container 102provides access to the power transformer 406 and wiring terminationswithin the container 404.

The LEDs 410 are electrically-operated illumination components that maybe powered from the building electrical branch circuit power supplysystem. The power supplied to the light fixture sign 100 can be backedup with an emergency mode power source derived from an exterioremergency engine generator source and/or from a secondary emergencyoperation battery back-up (e.g., battery back 402) and charger/powercomponents, which are mounted integrally within the light fixture sign100. Battery back-up and charger/power components that serve one or morelight fixture signs can also be served from a remote location. Lightfixture sign 100 will typically be constantly energized under buildingnormal power sources under normal power when the normal power source isavailable. Light fixture sign 100 is configured to monitor the presenceof the normal power source. The secondary emergency operation sourceallows the light fixture sign 100 to automatically continue to operatethe exit illumination for a designated time period, such as a minimum of90 minutes. Upon the return of the normal power building source, thelight fixture sign 100 automatically transfers the illumination systemto operate from the normal power building source.

The battery pack 402, container 404, power transformer 406, PCB 408, andLEDs 410 are shown with dashed lines in FIG. 4 because these elementsare located behind the front surface 108 of the flange 104. However,these elements may be accessed by removing one or more of thetranslucent inserts 302.

FIG. 6 is a diagram illustrating a perspective view of a light fixturesign 600 prior to installation in a concrete wall according to oneembodiment. In the illustrated embodiment, the light fixture sign 600 isa light fixture exit sign. In other embodiments, the light fixture sign600 may be another type of sign. Light fixture sign 600 includes acontainer 602, a self-contained plastic exit sign 603, and an exit signface apparatus 604. In some embodiments, the self-contained plastic exitsign 603 is a UL-listed exit sign that includes a light source, such asone or more high intensity LEDs, and a battery pack. The exit sign faceapparatus 604 includes mounting brackets 608(1) and 608(2) (collectivelyreferred to as mounting brackets 608), exit sign mounting sleeve 610,and flange 606. The flange 606 includes a front surface 611 and a rearsurface 613. The brackets 608 and the mounting sleeve 610 extend fromthe rear surface 613 of the flange 606.

The front surface 611 of the flange 606 includes the message “EXIT” instencil form and has opposed indicator “V” shaped cut-outs on oppositesides to indicate a right or a left exit. Specifically, the frontsurface 611 includes stencil openings 614(1)-614(6) (collectivelyreferred to as stencil openings 614). Masks may be used to cover one orboth of the direction indicators (i.e., stencil openings 614(1) and614(6)), which provides a method for customizing the sign in the field.

Light fixture sign 600 is configured to be installed in concrete blockwall 620. Wall 620 includes a rectangular-shaped opening 626, which issized to receive container 602 therein. The light fixture sign 600 isconfigured to be mounted flush with the surface of the concrete blockwall 620. The container 602 is positioned completely within the opening626 of the concrete block wall 620. The recessed container 602 islocated so that the open end of the container 602 is aligned flush withthe surrounding concrete blocks of the wall construction. The exit signface apparatus 604 is inserted into the installed container 602, suchthat the front surface 611 is positioned in the same plane as thesurrounding wall 620. The front surface 611 may be textured and paintedto match the surrounding concrete block wall 620. When the front surface611 matching finish is completed and cured, the exit sign face apparatus604 may be removed from the wall 620, and the self-contained exit sign603 may be placed into the mounting sleeve 610 with the letters andarrows of the exit sign 603 aligned with corresponding letter and arrowstencil openings 614 of the exit sign face apparatus 604.

Container 602 is electrically connected to an external power source(e.g., the building mains), and power from the external power source isprovided to self-contained exit sign 603 by interconnecting thecontainer 602 and the exit sign 603 with wires 618. An emergency powersupply may provide power for self-contained exit sign 603 when power islost to the building mains.

The exit sign face apparatus 604 with the self-contained exit sign 603contained therein is positioned in its final position by sliding slots615 formed in the brackets 608 onto the ends of side-mounted supportpins 617 that are mounted on the interior sides of the container 602.Once the exit sign face apparatus 604 is completely inserted into thecontainer 602, the pins 617 engage with respective alignment notches 616formed at an end of the slots 615 to help maintain the exit sign faceapparatus 604 in its final flush-mounted position. Safety chains may beused to support the exit sign face apparatus 604 from the container 602while electrical power connection terminations are completed, and mayalso prevent future inadvertent separation or loss of the exit sign faceapparatus 604 from the container 602 after installation. Afterinstallation, the front surface 611 of the flange 606 is flush or nearlyflush with the outer finished surface of the wall 620, and the flange606 is the only external part of the light fixture sign 600.

Translucent inserts 302(1)-302(6) (FIG. 3) in the shape of letters andarrows are positioned (removably or permanently) in the stencil openings614(1)-614(6), respectively. In some embodiments, the translucentinserts 302 are red or green in color. In other embodiments, thetranslucent inserts 302 are white in color. Other embodiments mayinclude custom colors authorized by building inspectors.

The arrow-shaped inserts 302(1) and 302(6) may be field selected to beused on a particular building installation location where needed foregress path directional information. During an initial installation, aleft arrow, right arrow, both arrows, or no arrows arrangement isdecided. In some embodiments, the light fixture sign 600 is initiallyconstructed with an arrow-shaped filler or mask that covers thearrow-shaped stencil openings 614(1) and 614(6). During installation, ifan arrow is selected to be viewed and illuminated, that correspondingarrow's filler or mask may be removed in the field at the buildinginstallation location. If an arrow is not needed in a particularinstallation, the arrow-shaped filler or mask remains untouched and thefinished wall covering is applied over that masked area to completelyconceal it from view. Field location decided use of the arrows needed ateach building installation is an improvement over other exit signs thatmust be produced, inventoried, specified correctly and ordered correctlyto match the many different arrow configurations throughout all buildingexit signage locations.

Light fixture sign 600 can use any existing exit sign light fixture forthe self-contained exit sign 603, while still providing a flush andconcealed installation. Previous exposed exit signage experiences veryhigh ongoing replacement costs to building owners. Exposed exit signsare typically an easy target for vandalism since those enclosures arenoticeably visible and are constructed with components parts that sufferdamage easily. Damaged exit signs also cause added liability and safetyconcerns for people to egress the buildings. In contrast, embodiments ofthe light fixture sign 600 provide an improvement in regard to vandalismwith the concealed enclosure with no visible fasteners. This designreduces possible damage from vandalism since there is no visible exposedenclosure or constructed parts to attract undesirable attention.

FIG. 7 is a diagram illustrating a perspective view of a light fixturesign 700 mounted on a ceiling 702 according to one embodiment. In theillustrated embodiment, the light fixture sign 700 is a light fixtureexit sign. In other embodiments, the light fixture sign 700 may beanother type of sign. In one embodiment, light fixture sign 700 is asingle-sided sign, and in another embodiment, light fixture sign 700 isa double-sided sign. Light fixture sign 700 includes a front surface 704and a rear surface 706. In some embodiments, the light fixture sign 700includes a light source, such as one or more high intensity lightemitting diodes (LEDs), and a battery pack.

The front surface 704 of the light fixture sign 700 includes the message“EXIT” in stencil form and has opposed indicator “V” shaped cut-outs onopposite sides to indicate a right or a left exit. Specifically, thefront surface 704 includes stencil openings 710(1)-710(6) (collectivelyreferred to as stencil openings 710). Masks may be used to cover one orboth of the direction indicators (i.e., stencil openings 710(1) and710(6)), which provides a method for customizing the sign in the field.For a double-sided embodiment of the light fixture sign 700, the rearsurface 706 also includes stencil openings 710.

Previous exit sign designs require the dismantling of the exposedconstructed enclosure to access the interior for replacement ofelectrical components and associated junction box wiring terminations.In contrast, the internal components of the light fixture sign 700 areaccessible without such dismantling, and the means of access isconcealed and not visible. Access to the internal components of thelight fixture sign 700 is described in further detail below withreference to FIGS. 8 and 9. Previous exposed exit signs are not Codeapproved to be concealed, painted and covered with any field appliedmatching finishes. In contrast, the light fixture sign 700 can bepainted or finished in the field to match any finishes used in eachindividual building installation during the installation stage toprovide an aesthetically pleasing appearance.

FIG. 8 is a diagram illustrating a side view of the ceiling-mountedlight fixture sign 700 shown in FIG. 7 according to one embodiment. Theembodiment of the light fixture sign 700 shown in FIG. 8 is identifiedby reference number 700(1). The light fixture sign 700(1) is connectedthrough the ceiling 702 to a ceiling structure 806 located above theceiling 702. A power cable 804 positioned above the ceiling 702 isattached through the ceiling 702 to a top side of the light fixture sign700(1), and is configured to provide power from an external power source(e.g., the building mains) to elements within the light fixture sign700(1). An emergency power supply provides power for light fixture sign700(1) when power is lost to the building mains.

In the embodiment shown in FIG. 8, the ceiling 702 is not accessible.Because the ceiling 702 is not accessible, access to the internalcomponents of the light fixture sign 700(1) is provided by removabletranslucent inserts 802(1) and 802(2) (collectively referred to astranslucent inserts 802) in the shape of letters and arrows, which canbe press fit into place in the stencil openings 710 (FIG. 7). For theillustrated double-sided embodiment, translucent inserts 802(1) areinserted into stencil openings 710 in the rear surface 706, andtranslucent inserts 802(2) are inserted into stencil openings 710 in thefront surface 704. In some embodiments, the translucent inserts 802 arered or green in color. In other embodiments, the translucent inserts 802are white in color. Other embodiments may include custom colorsauthorized by building inspectors.

The translucent inserts 802 may include arrow-shaped inserts that may befield selected to be used on a particular building installation locationwhere needed for egress path directional information. During an initialinstallation, a left arrow, right arrow, both arrows, or no arrowsarrangement is decided. In some embodiments, the light fixture sign700(1) is initially constructed with an arrow-shaped filler or mask thatcovers the arrow-shaped stencil openings 710(1) and 710(6). Duringinstallation, if an arrow is selected to be viewed and illuminated, thatcorresponding arrow's filler or mask may be removed in the field at thebuilding installation location. If an arrow is not needed in aparticular installation, the arrow-shaped filler or mask remainsuntouched and the finished wall covering is applied over that maskedarea to completely conceal it from view. Field location decided use ofthe arrows needed at each building installation is an improvement overother exit signs that must be produced, inventoried, specified correctlyand ordered correctly to match the many different arrow configurationsthroughout all building exit signage locations.

The light fixture sign 700(1) meets National Electrical Coderequirements, which require access to the interior of the electrifiedlighting fixtures by allowing access and replacement of all interiorelectrical components and junction box wiring terminations. Removal ofthe translucent inserts 802(1) and 802(2) provides complete access toall interior electrical components and junction box wiring terminationsof the light fixture sign 700(1). In contrast, previous exit signdesigns require the dismantling of the exposed constructed enclosure toaccess the interior for replacement of electrical components andassociated junction box wiring terminations.

FIG. 9 is a diagram illustrating a side view of the ceiling-mountedlight fixture sign 700 shown in FIG. 7 according to another embodiment.The embodiment of the light fixture sign 700 shown in FIG. 9 isidentified by reference number 700(2). A top side of the light fixturesign 700(2) is connected through the ceiling 702 to a power cableapparatus 906 located above the ceiling 702. A power cable 904positioned above the ceiling 702 is attached to the apparatus 906, andis configured to provide power from an external power source (e.g., thebuilding mains) to elements within the light fixture sign 700(2). Anemergency power supply provides power for light fixture sign 700(2) whenpower is lost to the building mains. In the embodiment shown in FIG. 9,the ceiling 702 is accessible, so access to the internal components ofthe light fixture sign 700(2) may be provided, for example, by removinga panel from the ceiling 702.

The light fixture sign 700(2) includes an exit sign container 904 and aself-contained plastic exit sign 902. The self-contained exit sign 902is inserted into an open top end of the exit sign container 904. Accessto the self-contained exit sign 902 may be provided by lifting theapparatus 906 away from the light fixture sign 700(2), and removing theself-contained exit sign 902 from the exit sign container 904. In someembodiments, the self-contained exit sign 902 is a UL-listed exit signthat includes a light source, such as one or more high intensity LEDs,and a battery pack. The light fixture sign 700(2) meets NationalElectrical Code requirements, which require access to the interior ofthe electrified lighting fixtures by allowing access and replacement ofall interior electrical components and junction box wiring terminations.

Translucent inserts 802 (FIG. 8) in the shape of letters and arrows arepositioned (removably or permanently) in the stencil openings 710 (FIG.7) in one or both of the front surface 704 and rear surface 706. In someembodiments, the translucent inserts 802 are red or green in color. Inother embodiments, the translucent inserts 802 are white in color. Otherembodiments may include custom colors authorized by building inspectors.

The translucent inserts 802 may include arrow-shaped inserts that may befield selected to be used on a particular building installation locationwhere needed for egress path directional information. During an initialinstallation, a left arrow, right arrow, both arrows, or no arrowsarrangement is decided. In some embodiments, the light fixture sign700(2) is initially constructed with an arrow-shaped filler or mask thatcovers the arrow-shaped stencil openings 710(1) and 710(6). Duringinstallation, if an arrow is selected to be viewed and illuminated, thatcorresponding arrow's filler or mask may be removed in the field at thebuilding installation location. If an arrow is not needed in aparticular installation, the arrow-shaped filler or mask remainsuntouched and the finished wall covering is applied over that maskedarea to completely conceal it from view. Field location decided use ofthe arrows needed at each building installation is an improvement overother exit signs that must be produced, inventoried, specified correctlyand ordered correctly to match the many different arrow configurationsthroughout all building exit signage locations.

FIG. 10 is a diagram illustrating a perspective view of a light fixturesign 1000 with a removable light source apparatus prior to installationin a wall according to one embodiment. In the illustrated embodiment,the light fixture sign 1000 is a light fixture exit sign. In otherembodiments, the light fixture sign 1000 may be another type of sign.Light fixture sign 1000 includes a container 1002, a clear plasticbacking sheet (e.g., plexiglass) 1019, an exit sign face 1004, and aremovable light source apparatus 1006.

The exit sign face 1004 includes a front surface 1011 and a rear surface1013. The exit sign face 1004 includes the message “EXIT” in stencilform and has opposed indicator “V” shaped cut-outs on opposite sides toindicate a right or a left exit. Specifically, the exit sign face 1004includes stencil openings 1014(1)-1014(6) (collectively referred to asstencil openings 1014). Masks may be used to cover one or both of thedirection indicators (i.e., stencil openings 1014(1) and 1014(6)), whichprovides a method for customizing the sign in the field. Clear plasticbacking sheet 1019 is configured to be mounted to the rear surface 1013of the exit sign face 1004.

The exit sign face 1004 includes six openings 1017 formed through theface 1004, and six screws 1018 respectively inserted through the sixopenings 1017. The six screws 1018 are configured to be respectivelyscrewed into six posts 1005 that extend from a rear interior surface ofthe container 1002 to mount the exit sign face 1004 and the clearplastic backing sheet 1019 to the container 1002.

The removable light source apparatus 1006 includes a power cable 1001, aflexible LED array 1007, a proximal end cap 1008 having a set screw1009, a clear plastic tube (e.g., a plexiglass tube) 1010, a distal endcap 1015, and a screw 1016. The power cable 1001 is coupled to aproximal end of the flexible LED array 1007, and provides power to theLED array 1007. The power cable 1001 is electrically connected to anexternal power source (e.g., the building mains). An emergency powersupply may provide power for light fixture sign 1000 when power is lostto the building mains. Proximal end cap 1008 is inserted into a proximalend of the tube 1010, and distal end cap 1015 is inserted into a distalend of the tube 1010. LED array 1007 is inserted through the proximalend cap 1008 and into the tube 1010, and is secured in place by setscrew 1009.

FIG. 11 is a diagram illustrating a front view of the light fixture sign1000 shown in FIG. 10 with the exit sign face 1004 and the clear plasticbacking sheet 1019 removed according to one embodiment. FIG. 12 is adiagram illustrating a side view of the light fixture sign 1000 shown inFIG. 10 according to one embodiment. After light source apparatus 1006has been assembled as described above, the light source apparatus 1006is inserted into an opening 1003(1) formed in a first side of thecontainer 1002. A keyed guide may be used at the point of entrance intothe container 1002 to help ensure that the lighting position is correct.In the illustrated embodiment, after inserted into the container 1002,the light source apparatus 1006 extends across an entire width of thecontainer 1002, and is held in place at its distal end by screw 1016.Screw 1016 extends through an opening 1003(2) formed in a second side(opposite the first side) of the container 1002, and is screwed into thedistal end cap 1015.

Light fixture sign 1000 is configured to be installed in wall 1020 (FIG.12). Wall 1020 includes a rectangular-shaped opening 1026, which issized to receive container 1002 therein. The light fixture sign 1000 isconfigured to be mounted flush with the external surface of the wall1020. The container 1002 is positioned completely within the opening1026 of the wall 1020. The recessed container 1002 is located so thatthe open end of the container 1002 is aligned flush with the surroundingexternal surface of the wall construction.

The exit sign face 1004 with the clear plastic backing sheet 1019attached thereto is inserted into the installed container 1002, suchthat the front surface 1011 is positioned in the same plane as thesurrounding wall 1020. The front surface 1011 may be textured andpainted to match the surrounding wall 1020. After installation, thefront surface 1011 of the exit sign face 1004 is flush or nearly flushwith the outer finished surface of the wall 1020, and the front surface1011 is the only external part of the installed light fixture sign 1000.

Translucent inserts 302(1)-302(6) (FIG. 3) in the shape of letters andarrows are positioned (removably or permanently) in the stencil openings1014(1)-1014(6), respectively. In some embodiments, the translucentinserts 302 are red or green in color. In other embodiments, thetranslucent inserts 302 are white in color. Other embodiments mayinclude custom colors authorized by building inspectors.

The removable light source apparatus 1006 acts as a removable pod thatmay be easily inserted into and removed from the container 1002 beforeor after installation of the light fixture sign 1000, even if useraccess to the light fixture sign 1000 itself is not available. Inaddition to including a light source, such as the LED array 1007, theremovable light source apparatus 1006 may also include other elements,such as power components and a battery pack. The power cable 1001 mayinclude a metallic pull/push cable to handle the tension duringinsertion and removal. At any point after installation of the lightfixture sign 1000, the light source apparatus 1006 may be easily removedand replaced from a remote location without direct access to the lightfixture sign 1000 by pulling the light source apparatus 1006 through theopening 1003(1) via the power cable 1001. The light source apparatus1006 may be pulled through conduit 1030 (FIG. 11) to a user-accessibleremote location for electrical access and parts maintenance/replacement.The removable light source apparatus 1006 may be used in any of thelight fixture sign embodiments disclosed herein.

FIG. 13 is a diagram illustrating a perspective view of a light fixturesign 1300 with a remote light source apparatus according to oneembodiment. In the illustrated embodiment, the light fixture sign 1300is a light fixture exit sign. In other embodiments, the light fixturesign 1300 may be another type of sign. Light fixture sign 1300 includesa container 1302, a flange 1304, and a remote light source apparatus1306 that is external to the container 1302.

The flange 1304 includes a front surface 1311 and a rear surface 1313.The flange 1304 includes the message “EXIT” in stencil form.Specifically, the flange 1304 includes stencil openings 1314(1)-1314(4)(collectively referred to as stencil openings 1314). Translucent inserts302(2)-302(5) (FIG. 3) in the shape of letters and arrows are positioned(removably or permanently) in the stencil openings 1314(1)-1314(4),respectively. In some embodiments, the translucent inserts 302 are redor green in color. In other embodiments, the translucent inserts 302 arewhite in color. Other embodiments may include custom colors authorizedby building inspectors.

The remote light source apparatus 1306 includes a remote light source1312, a fiber optic cable 1310 with a plurality of individual fiberoptic elements, and a conduit 1308. The conduit 1308 encloses the fiberoptic cable 1310 and protects the cable 1310 from damage. A proximal endof the fiber optic cable 1310 is coupled to the light source 1312, and adistal end of the fiber optic cable 1310 is coupled to a top side of thecontainer 1302. The light source 1312 is electrically connected to anexternal power source (e.g., the building mains). The light source 1312generates light, which is guided by the fiber optic cable 1310 from thelight source 1312 to the interior of the container 1302 to illuminatethe EXIT message defined by the stencil openings 1314. The light sourceapparatus 1306 may also include additional components, such as powercomponents and a battery pack. The remote light source apparatus 1306may be used in any of the light fixture sign embodiments disclosedherein.

Light fixture sign 1300 is configured to be installed in a wall, and tobe mounted flush with the external surface of the wall. The container1302 may be positioned completely within an opening of the wall. Thefront surface 1311 of the flange 1304 may be textured and painted tomatch the surrounding wall. After installation, the front surface 1311of the flange 1304 will be flush or nearly flush with the outer finishedsurface of the wall, and the front surface 1311 is the only externalpart of the installed light fixture sign 1300.

FIG. 14 is a diagram illustrating a perspective view of a light fixturesign 1400 with removable electroluminescent inserts according to oneembodiment. In the illustrated embodiment, the light fixture sign 1400is a light fixture exit sign. In other embodiments, the light fixturesign 1400 may be another type of sign. Light fixture sign 1400 includesa container 1402 with a front surface 1406.

The front surface 1406 of the container 1402 includes the message “EXIT”in stencil form and has opposed indicator “V” shaped cut-outs onopposite sides to indicate a right or a left exit. Specifically, thefront surface 1406 includes stencil openings 1410(1)-1410(6)(collectively referred to as stencil openings 1410). Masks may be usedto cover one or both of the direction indicators (i.e., stencil openings1410(1) and 1410(6)), which provides a method for customizing the signin the field.

Light fixture sign 1400 is shown installed in wall 1408. Afterinstallation, the front surface 1406 of the container 1402 is flush ornearly flush with the outer finished surface of the wall 1408. Afterinstallation, the front surface 1406 is the only external part of thelight fixture sign 1400.

The light fixture sign 1400 is a concealed exit sign that allowsinstallation into any of many wall materials. In addition to gypsumboard, other wall materials where the light fixture signs disclosedherein can apply include brick and mortar, wood, concrete, fiberglass,and metal construction. Matching wall finishes may be applied to thewall and the light fixture sign 1400, including paint and wall paperfabric coverage. The front surface 1406 of the light fixture sign 1400may include a textured finished surface to match any other finished wallmaterials.

After installation in wall 1408, the light fixture sign 1400 has anaesthetically pleasing appearance in regard to the desire of architectsand interior designers because it is concealed and blends in with thesurrounding wall surface. The only visible element of the light fixturesign 1400 is the letters and arrows themselves. The finished appearanceof the light fixture sign 1400 is also benefited since there is no needfor any visible means of fasteners and mounting brackets. The lightfixture sign 1400 is mounted flush to the wall 1408 or building materialsurface to provide a completely undetectable installation.

Once the finished paint is applied to the front surface 1406 and thencured, removable electroluminescent inserts 1420(1)-1420(6)(collectively referred to as removable electroluminescent inserts 1420)in the shape of letters and arrows can be press fit into place in thestencil openings 1410(1)-1410(6), respectively. Prior to insertion intothe stencil openings 1410, the removable electroluminescent inserts 1420are electrically coupled to a power supply 1504 (FIG. 15). Specifically,a plurality of wires 1412 are electrically connected to the power supply1504, with each of the wires terminating in a connector 1414. The wires1412 and the connectors 1414 may be pulled through the stencil openings1410, as shown in FIG. 14, to facilitate connection with theelectroluminescent inserts 1420. Each of the electroluminescent inserts1420 includes a wire 1418 extending from a rear surface of the insert1420, and each of the wires 1418 terminates in a connector 1416. Each ofthe connectors 1414 may be connected to a respective one of theconnectors 1416, thereby electrically connecting the electroluminescentinserts 1420 to the power supply 1504. After the electrical connectionis made, the wires 1412 and 1418 and the connectors 1414 and 1416 may beinserted through the stencil openings 1410 and into the container 1402to allow the electroluminescent inserts 1420 to be inserted into thestencil openings 1410. In another embodiment, solidly mounted male andfemale pin and socket connectors may be used such that theelectroluminescent inserts 1420 are energized once they are plugged intotheir final mounted positions.

The arrow-shaped inserts 1420(1) and 1420(6) may be field selected to beused on a particular building installation location where needed foregress path directional information. During an initial installation, aleft arrow, right arrow, both arrows, or no arrows arrangement isdecided.

The light fixture sign 1400 according to embodiments disclosed hereinmeets National Electrical Code requirements, which require access to theinterior of the electrified lighting fixtures by allowing access andreplacement of all interior electrical components and junction boxwiring terminations. All of the electrical components of the lightfixture sign 1400 are concealed behind the finished wall surface,Removal of the electroluminescent inserts 1420 provides complete accessto all interior electrical components and junction box wiringterminations of the light fixture sign 1400.

FIG. 15 is a diagram illustrating a side view of the light fixture sign1400 shown in FIG. 14 according to one embodiment. As shown in FIG. 15,the stencil openings 1410 include stepped recessed edge insets 1502 foraccepting the electroluminescent inserts 1420, and maintaining theinserts 1420 therein. The light fixture sign 1400 includes a powersupply 1504 that is mounted within the container 1402. The power supply1504 is electrically connected to a primary power input 1506, and iselectrically connected to wires 1412 for providing power to theelectroluminescent inserts 1420. The primary power input 1506 providespower from an external power source (e.g., the building mains) to powersupply 1504. An emergency power supply provides power for light fixturesign 1400 when power is lost to the building mains.

One embodiment is directed to a concealed light fixture sign, whichincludes a flange having stencil openings formed therein that define amessage, and a container extending from a rear surface of the flange toprovide light through the stencil openings. The container is configuredto be installed completely within a recess behind a mounting surfacewith the flange positioned substantially flush with the mountingsurface. Translucent inserts are positioned within the stencil openings,wherein the translucent inserts are removable to provide access to aninterior of the container after installation of the light fixture sign.

In one form of this embodiment, the message is an EXIT message. Theinstalled light fixture sign according to one embodiment includes novisible fasteners or mounting brackets. The stencil openings may includearrow-shaped stencil openings that are configured to be selectivelycovered at an installation location with at least one arrow-shaped maskto provide a custom arrow configuration for that installation location.Removal of the translucent inserts may allow removal and replacement ofinterior electrical components within the container. The flange may befield paintable to match a finish of the mounting surface. The containermay include a removable light source that is configured to be removedand replaced from a remote location without direct access to the lightfixture sign. The removable light source may comprise a light emittingdiode (LED) array contained in a clear plastic tube that is configuredto be transported to and from the container via a conduit coupled to thecontainer. The light fixture sign may include a light source that isexternal to and remote from the container and that delivers light to thecontainer via a fiber optic cable.

Another embodiment is directed to a wall-mountable light fixture sign,which includes a container configured to be installed completely withina recess in a wall, and a self-contained plastic exit sign that includesa light source and a battery pack and that is configured to project anEXIT message. The light fixture sign also includes an exit sign faceapparatus that includes a flange and a mounting sleeve extending from arear surface of the flange, wherein the mounting sleeve is sized toreceive the self-contained plastic exit sign therein, wherein the flangeincludes stencil openings formed therein to allow the EXIT message topass through the stencil openings, wherein the mounting sleeve is sizedto fit within the container, and wherein the flange is configured to beinstalled substantially flush with the wall.

In one form of this embodiment, the exit sign face apparatus furtherincludes at least one mounting bracket extending from the rear surfaceof the flange to facilitate mounting the exit sign face apparatus to thecontainer. The at least one mounting bracket may include a slotconfigured to be slidably attached to a pin contained within an interiorof the container. The slot may include an alignment notch to facilitatemaintaining the flange in a flush-mounted position. In one embodiment,the installed light fixture sign includes no visible fasteners ormounting brackets. The stencil openings may include arrow-shaped stencilopenings that are configured to be selectively covered at aninstallation location with at least one arrow-shaped mask to provide acustom arrow configuration for that installation location. The flangemay be field paintable to match a finish of the wall.

Yet another embodiment is directed to a ceiling-mountable light fixturesign, which includes a container having a top side configured to bemounted to a ceiling, and a front surface having a first set of stencilopenings formed therein that define a first EXIT message, wherein thecontainer includes a light source to project light through the stencilopenings. The light fixture sign includes a first set of translucentinserts positioned within the stencil openings, wherein the translucentinserts are removable to provide access to an interior of the containerafter installation of the light fixture sign on the ceiling.

In one form of this embodiment, the container includes a rear surfacehaving a second set of stencil openings formed therein that define asecond EXIT message. A second set of translucent inserts may bepositioned within the second set of stencil openings, wherein the secondset of translucent inserts are removable to provide access to aninterior of the container after installation of the light fixture signon the ceiling. A self-contained plastic exit sign may be positionedwithin the container, wherein the self-contained plastic exit signincludes the light source.

A further embodiment is directed to a concealed wall-mountable lightfixture sign, which includes a container having a front surface withstencil openings formed therein, wherein the container is configured tobe installed completely within a recess in a wall with the front surfacepositioned substantially flush with the wall. The light fixture signincludes electroluminescent inserts positioned within the stencilopenings, wherein the electroluminescent inserts are removable toprovide access to an interior of the container after installation of thelight fixture sign in the wall.

Although some embodiments disclosed herein are directed to light fixtureexit signs, the techniques described herein are applicable to any use ofelectrically illuminated, self-illuminated light fixture signage. Otheruses of signage include, but are not limited to, building directionalsignage, parking ramp, airport signage and medical industry buildingsignage. Embodiments disclosed herein may also be installed in or on avariety of mounting surfaces, including surfaces of walls, floors,ceilings, kiosks, landscape rock/materials, vehicles, as well as othermounting surfaces.

FIG. 16 is a diagram illustrating a front view of a light fixture sign1600 mounted to a ceiling 1602 (ceiling pendant mounted) according toone embodiment. In other embodiments, the light fixture sign 1600 may beend-mounted to a wall, or window glass mounted. In some embodiments, themounting structure (e.g., ceiling or wall) is gypsum board. In theillustrated embodiment, the light fixture sign 1600 is a light fixtureexit sign. In other embodiments, the light fixture sign 1600 may beanother type of sign. Light fixture sign 1600 includes a container 1604,a sign message structure 1605, and a mounting system 1612. The container1604 is inserted through an opening in the ceiling 1602, and the bottomsurface of the container 1604 is flush mounted to the ceiling 1602 viathe mounting system 1612. After being mounted, the container 1604 ispositioned above the ceiling 1602, and is not visible to persons withinthe room containing the ceiling 1602. Thus, the container 1604 andelectrical components of the sign 1600 are completely concealed in thebuilding ceiling, and the only visible portion of the sign 1600 is thesign message structure 1605.

In some embodiments, the container 1604 includes a light source, such asone or more illumination lamps or high intensity light emitting diodes(LEDs), power supplies, emergency lighting battery back-up PC boards,and battery packs. A power cable may be attached to the container 1604to provide power from an external power source (e.g., the buildingmains) to elements within the container 1604. An emergency power supplymay provide power for light fixture sign 1600 when power is lost to thebuilding mains.

In some embodiments, the sign message structure 1605 includes aplurality of LEDs, which may be powered by a power supply in thecontainer 1604. Some example illumination methods of this disclosure mayutilize energy efficient and long-life LED internally illuminatedlighting. Additional methods to meet building Codes in lieu of internalillumination can include exterior flood light illumination,electroluminescent panels, electrified illuminated applied paintingprocesses, non-electrified self-illuminated radium/radiation exit signs,liquid crystal display (LCD) video screen panels, LED video screenpanels, organic LED (OLED) video screen panels, and photoluminescent(glow in the dark) paint applications, which are all acceptablealternatives that meet current building Code requirements and are withinthis disclosure.

The sign message structure 1605 includes the message “EXIT” formed bycut-out letters 1636, and also includes “V” shaped cut-out arrow symbols1634 on opposite ends of the “EXIT” message to indicate a left or aright exit. The cut-out letters 1636 and arrows 1634 are attachedtogether via attachment structures 1632. In some embodiments, thecut-out letters 1636 and arrows 1634 are red or green in color. In otherembodiments, the cut-out letters 1636 and arrows 1634 are white incolor. Other embodiments may include custom colors authorized bybuilding inspectors.

The right and left directional arrows 1634 of the sign message structure1605 may be selected in the field and can be decided for each uniqueinstallation and directional configuration as needed. During an initialinstallation, a left arrow, right arrow, both arrows, or no arrowsarrangement is decided. Field location decided use of the arrows neededat each building installation is an improvement over other exit signsthat must be produced, inventoried, specified correctly and orderedcorrectly to match the many different arrow configurations throughoutall building exit signage locations.

Some exit signs leave an architecturally disappointing visible embossedimage on the common white or black colored opaque plastic panel of theexposed signage faces if an installer chooses not to use directionalarrows. This disclosure provides an improvement over such exit signarrows in that if needed, the arrows can remain as part of the exitsign. This disclosure provides the improvement of a floating visiblefront illuminated arrow image(s) and matching the front illuminated exitsignage letters, and the arrows are then invisible from the back sidedue to a reflective mirror back side finish of the sign messagestructure 1605.

Mounting columns 1628 and 1630 are attached to a top end of the signmessage structure 1605, and extend through openings in a bottom surfaceof the container 1604 to hold the sign message structure 1605 in placeadjacent the ceiling 1602. The depth that the mounting columns 1628 and1630 extend into the container 1604 may be adjusted to adjust thedistance between the top of the sign message structure 1605 and theceiling 1602.

In one embodiment, only the front side of the sign message structure1605 is visible. A reflective mirror is positioned on the back side ofeach of the letters 1636 and symbols 1634 of the sign structure 1605,which results in the back side of the sign structure 1605 blending intothe room ceiling and wall materials. These mirror backings recreate theexact same finishes and colors of the adjacent wall and ceilingmaterials for each individual installation. This feature creates theeffect of the sign message structure 1605 being invisible when viewedfrom the back side. The human eye finds the back side of the suspendedsign message structure 1605 as indistinguishable from the surroundingwalls and ceiling as a person moves along a typical building room orcorridor since the structure 1605 reflects an exact changing image ofthe surrounding walls and ceiling that continuously blends the structure1605 into the room surroundings. This feature satisfies thearchitectural and interior design community by removing what theyconsider as a distraction to the room aesthetics. In addition, thisfeature offers improvement in safety over some other exit signageproducts that allow the public to see egress signage that is reversed,possibly causing confusion when egressing a building.

In some examples, rather than using the back side mirror feature, theback side and edges of the sign message structure 1605 may be painted tomatch the adjacent walls and ceiling to blend into surrounding finishes,which creates the illusion that the back side of the sign structure 1605is invisible. In some installations, painting (or equal wall or ceilingmaterial, i.e., metallic metal appearance) on the back side and theedges of the sign message structure 1605 will offer a better blend intothe adjacent walls and some ceilings as an alternative to the mirrorfeature, when adjacent lighting fixtures may cause a glare effect withuse of a mirrored surface. This choice can be made in the field anddetermined by the installer as required for each individual lightfixture sign mounting location. The attachment structures 1632 mayremain as clear/translucent structures for both the mirror example andthe painted/metallic example.

The light fixture sign 1600 includes a protective shock absorbingmechanism 1620 that allows the sign message structure 1605 to move ifsubject to contact with an outside force. In the illustrated embodiment,the shock absorbing mechanism 1620 includes springs 1622 and 1624 thateach extend across an interior of the container 1604 from a top side toa bottom side of the container 1604, and spring 1626 that extends acrossthe interior of the container 1604, perpendicularly to springs 1622 and1624, from one side of the container 1604 to an opposite side of thecontainer 1604. The springs 1622, 1624, and 1626 are coupled to the signmessage structure 1605 via the mounting columns 1628 and 1630, andprovide a spring-loaded feature that allows the sign message structure1605 to flex from an original mounting position and then automaticallyreturn to the original mounting position after the outside force hasbeen removed. The shock absorbing mechanism 1620 also provides aself-aligning mechanism for installations that require mounting tosloped ceilings. The mechanism 1620 allows the sign message structure1605 to be aligned to maintain a center vertical line perpendicular tothe floor for sloped ceilings that are constructed at an angular slopein lieu of the typical horizontally leveled ceiling.

In one embodiment, the mounting system 1612 is a flush mounting systemthat includes a front plate 1614 and a back plate 1616. The flushmounting system 1612 provides an improvement over the common visiblesurface mounted brackets and exposed support plates for signage. Theflush mounting system 1612 completely conceals all evidence of mountingapparatuses, mainly including the mounting assembly plate. The onlyremaining visible feature of this sign is the Code required EXIT signletters and optional directional arrows for building egressrequirements.

The light fixture sign 1600 allows installation into any of many wall orceiling materials. In addition to gypsum board, other wall materialswhere the light fixture signs disclosed herein can be applied includebrick and mortar, wood, concrete, concrete block, fiberglass, and metalconstruction. Matching wall and ceiling finishes may be applied to thewall/ceiling and mounting portions of the light fixture sign 1600,including paint and wall paper fabric coverage. Mounting portions of thelight fixture sign 1600 may also include a textured finished surface tomatch any other finished wall or ceiling materials, including suspendedceiling tile systems.

After mounting the light fixture sign 1600 into a section in the gypsumwall or ceiling location, standard mudding of plaster compound andfiberglass taping may be applied overlapping the perimeter edges of themounting system 1612 and the mounting surface. This allows the lightfixture sign 1600 to be concealed on the same plane as the finishedmounting surface (e.g., ceiling 1602). A surface coverage, such aspaint, may be applied across both the front surface of the mountingsystem 1612 and the surrounding wall/ceiling area at the same time.

Light fixture sign 1600 has an aesthetically pleasing appearance desiredby architects and interior designers because some of its components arecompletely out of view once the installation is completed, with the onlyvisible element being the Code required letters and arrows themselves.The finished appearance of the light fixture sign 1600 is also benefitedsince there is no need for any visible means of fasteners and mountingbrackets. The light fixture sign 1600 may be mounted flush to the wallor ceiling building material surfaces and window glass locations toprovide a completely undetectable installation of the exit sign.

FIG. 17 is a diagram illustrating a front view of the light fixture sign1600 shown in FIG. 16 with the end of the sign message structure 1605mounted to a wall 1702 according to one embodiment. In the example shownin FIG. 17, the left end of the sign message structure 1605 is mountedto the wall 1702, but in other examples, the right end of the signmessage structure 1605 may be mounted to the wall. The container 1604 isinserted through an opening in the wall 1702, and the bottom surface ofthe container 1604 is flush mounted to the wall 1702 via the mountingsystem 1612. It is noted that the container 1604 shown in FIG. 17 isrotated counterclockwise by ninety degrees from the position shown inFIG. 16, so the bottom surface of the container 1604 is parallel to thewall 1702. After being mounted, the container 1604 is positioned behindthe wall 1702, and is not visible to persons within the room containingthe wall 1702. Thus, the container 1604 and electrical components of thesign 1600 are completely concealed in the building wall, and the onlyvisible portion of the sign 1600 is the sign message structure 1605.

Mounting columns 1628 and 1630 are attached to a left end of the signmessage structure 1605, and extend through openings in the bottomsurface of the container 1604 to hold the sign message structure 1605 inplace adjacent the wall 1702. The depth that the mounting columns 1628and 1630 extend into the container 1604 may be adjusted to adjust thedistance between the left end of the sign message structure 1605 and thewall 1702.

FIG. 18 is a diagram illustrating a perspective view of the lightfixture sign 1600 shown in FIG. 16 positioned to be mounted inside anopening 1804 in a concrete block wall 1802 according to one embodiment.In addition to the elements described above, light fixture sign 1600also includes mounting brackets 1808 and 1810. Mounting brackets 1808and 1810 are positioned near opposite ends of the mounting system 1612,and extend from a rear surface of the mounting system 1612. Thecontainer 1604 is positioned near a center of the mounting system 1612,and extends from the rear surface of the mounting system 1612.

Mounting columns 1628 and 1630 are attached to a left end of the signmessage structure 1605, and extend through openings in the mountingsystem 1612 and the container 1604 to hold the sign message structure1605 in place adjacent the wall 1802. The depth that the mountingcolumns 1628 and 1630 extend into the container 1604 may be adjusted toadjust the distance between the left end of the sign message structure1605 and the wall 1802.

Concrete block wall 1802 includes a rectangular-shaped opening 1804,which is sized to receive container 1604 and mounting brackets 1808 and1810 therein. The light fixture sign 1600 is configured to be mountedflush with the surface of the concrete block wall 1802. Afterinstallation, the container 1604 and mounting brackets 1808 arepositioned completely within the opening 1804 of the concrete block wall1802, the mounting system 1612 is aligned flush with the surroundingconcrete blocks of the wall construction, and the mounting brackets 1808hold the light fixture sign 1600 securely in place. The front surface ofthe mounting system 1612 may be textured and painted to match thesurrounding concrete block wall 1802.

Container 1604 may be electrically connected to an external power source(e.g., the building mains), and power from the external power source maybe provided to the sign message structure 1605. An emergency powersupply may provide power for light fixture sign 1600 when power is lostto the building mains.

FIG. 19 is a diagram illustrating a perspective view of the sign messagestructure 1605 shown in FIG. 16 mounted to a glass panel (e.g., window)1902 according to one embodiment. The glass panel 1902 is mounted towindow framing 1906. The sign message structure 1605 includes lowvoltage wiring 1904 that is electrically coupled to illuminationelements (e.g., LEDs) within sign message structure 1605, and that isconfigured to be coupled to a power source. The wiring 1904 may beexposed or concealed within the window mullions and wall/ceilingmaterials for remote connections to building power/emergency powersupply units located within other building areas. In the illustratedexample, the mounting columns 1628 and 1630 of the sign messagestructure 1605 are attached to a bottom of the sign message structureand are used to mount the structure 1605 to the window framing 1906. Inother examples, the mounting columns 1628 and 1630 may not be used, andthe back of the sign message structure 1605 may be adhered directly tothe glass panel 1902.

The sign message structure 1605 mounted to the glass panel 1902 servesas an improvement over currently marketed Code required exit signage.Some room construction methods may use wall areas constructed of glasspanels that are typically in building entrance lobby areas, which maylimit the mounting options of exit signage. The window glass framing maybe adjacent to the main exit egress doors of the buildings. Coderequires that the installation of exit signs shall be directly aboveexit egress doors, and also a second exit sign on the wall at floorlevel. The floor level exit signs shall be within 18 inches of the floorand within 6 inches of the door.

The large sizes of some exposed exit signs with exposed enclosures mayresult in mounting to exposed smaller window frame mullions wherebuilding designs are void of enough open wall space to properly securethese exposed exit sign enclosures. Such occurrences may result in lessthan desirable architectural room aesthetics where the exposed exitsigns appear to be an after-thought and inappropriate use of the wallmounting exit signs on to the face of window frames. Such conditions mayalso compromise a building owner's liability concerns in two ways: (1)by allowing Code required exit signage mounting methods to be subject tovandalism; and (2) by resulting in undesirable mounting locations wherethe directional signage does not indicate the best route of buildingegress. This is due to the offset exit sign mounting locations inrelation to the actual exit doors.

In contrast, the illuminated sign message structure 1605 may bepositioned directly above and adjacent to the building exit doors whenthe exterior walls are constructed of mostly windows. The illuminatedsign message structure 1605 may be adhered to the interior window glassitself. This configuration eliminates the exposure of the exit signcomponents to a remote location to reduce vandalism.

A reflective mirror positioned on the back side of each of the letters1636 produces an invisible exit signage when looking into the buildinginterior from outside the entrance during daylight conditions. The backside reflective mirrored image can reflect the exterior surrounding sky.

FIG. 20 is a diagram illustrating another perspective view of the signmessage structure 1605 shown in FIG. 16 according to one embodiment. Insome examples, the attachment structures 1632 and the mounting columns1628 and 1630 may be formed from a clear plastic material (e.g., clearacrylic). In some examples, the letters 1636 and arrows 1634 may beilluminated plastic letters and arrows. The bottom surfaces of theletters 1636 and arrows 1634 are attached to the top surfaces of theattachment structures 1632. In some examples, the attachment structures1632 completely cover the bottom surfaces of the letters 1636 and arrows1634. The attachment structures 1632 and the mounting columns 1628 and1630 may be formed as a single-piece structure, or may be formed byattaching separate structures together.

FIG. 21 is a diagram illustrating another view of the sign messagestructure 1605 shown in FIG. 20 including reflective mirrors 2102according to one embodiment. Front side surfaces of the reflectivemirrors 2102 are attached to the bottom surfaces of the attachmentstructures 1632, and the reflective mirrors 2102 have reflective backside surfaces that remain exposed to reflect light.

FIG. 22 is a diagram illustrating internal LEDs of the sign messagestructure 1605 shown in FIG. 16 according to one embodiment. As shown inFIG. 22, each of the letters 1636 and arrows 1634 of the sign messagestructure 1605 includes an internal LED array with a plurality of LEDs2202. In the illustrated example, the LEDs 2202 are evenly spaced apartand arranged in the shapes of the letters 1636 and arrows 1634.

FIG. 23 is a diagram illustrating a section view of a letter 1636 of thesign message structure 1605 shown in FIG. 22 according to oneembodiment. In some examples, the letters of the sign message structure1605 are colored illuminated letters. As shown in FIG. 23, the letter1636 includes colored acrylic layer 2302, LEDs 2202, letter body 2304,and curved reflector 2306. LEDs 2202 are positioned inside of letterbody 2304. Colored acrylic layer 2302 covers a top side of the letterbody 2304. LEDs 2202 emit light through the colored acrylic layer 2302.The acrylic layer 2302 may be colored red, green, or another color, toproduce a corresponding color as the LED light is transmitted throughthe layer 2302. The curved reflector 2306 acts as a light barrier toprevent or limit light from going to the sides and bottom of the letterbody 2304, and includes a top surface that directs the LED light outwardthrough the colored acrylic layer 2302 to provide a more visibleintensity. In some examples, the distance 2310 between the top of theacrylic layer 2320 and the bottom of the letter body 2304 is about 0.375inches, and the distance 2308 between the top of the curved reflector2306 and the bottom of the letter body 2304 is about 0.25 inches.

FIG. 24 is an exploded perspective view of a letter 1636 of the signmessage structure 1605 shown in FIG. 22 according to one embodiment. Asshown in FIG. 24, the letter 1636 includes an LED array 2404 including aplurality of LEDs 2202, and wires 2406 coupled to the LEDs 2202 toprovide power to the LEDs 2202 from a power source. The LED array 2404is configured to be positioned within a rectangular-shaped opening ofthe letter body 2304, and the colored acrylic layer 2302 is configuredto cover a top side of the letter body 2304. The letter body 2304includes cooling holes 2402 formed therein to provide cooling for theLED array 2404. The letter body 2304 may be colored (e.g., black, white,gray, red, green, etc.). The letter body 2304 may be frosted inside andoutside. The colored acrylic layer 2302 may be about ⅛ inch thick, andmay be laser cut. The colored acrylic layer 2302 may have frosted edgesand backing.

The structure including the LED array 2404, letter body 2304, andcolored acrylic layer 2302 is configured to be attached to the topsurface of the attachment structure 1632. The attachment structure 1632includes wire ways 2408 formed therein to receive the wires 2406 androute the wires 2406 through the attachment structure 1632. Reflectivemirror 2102 includes a front side surface 2410 that is configured to beattached to the bottom surface of the attachment structure 1632, and areflective back side surface 2412 that remains exposed to reflect light.

FIG. 25 is a diagram illustrating a perspective view of the lightfixture sign 1600 shown in FIG. 16 being mounted to a ceiling with themounting system 1612 according to one embodiment. The container 1604(FIG. 16) of light fixture sign 1600 is not shown in FIG. 25 to simplifythe illustration. The mounting system 1612 includes front plate 1614 andback plate 1616. Back plate 1616 has a rectangular shape and includes arectangular-shaped opening 2508 that is similar in size to therectangular-shaped opening 2502 in the ceiling. Back plate 1616 has ashape that matches the shape of the opening 2502, but the back plate1616 is slightly larger than the opening 2502, which allows the backplate 1616 to be secured to the ceiling around the perimeter of theopening 2502 using screws 2504.

After the back plate 1616 is secured to the ceiling, the front plate1614 is installed over the back plate 1616. Front plate 1614 has a shapethat matches the shape of the back plate 1616, but the front plate 1614is slightly smaller than the back plate 1616. After installation overthe back plate 1616, the perimeter of the front plate 1614 will bepositioned between an outer perimeter of the back plate 1616 and aninner perimeter of the back plate 1616, with the inner perimeter beingdefined by the perimeter of the opening 2508. The front plate 1614 isslightly larger than the opening 2502, which allows the front plate 1614to be secured to the ceiling around the perimeter of the opening 2502using screws 2506.

The front plate 1614 includes two openings that are sized to receive themounting columns 1628 and 1630. The mounting columns 1628 and 1630extend through the openings in the front plate 1614 and through theopening 2508 in the back plate 1616, and extend into the opening 2502 inthe ceiling for attachment to container 1604 (FIG. 16).

FIG. 26 is a diagram illustrating a perspective view of the lightfixture sign 1600 shown in FIG. 25 after being mounted to the ceiling2602 with the mounting system 1612 according to one embodiment. Aftermounting the light fixture sign 1600 into the ceiling location, standardmudding of plaster compound and fiberglass taping 2604 may be appliedoverlapping the perimeter edges of the mounting system 1612 and themounting surface. A surface coverage, such as paint, may be appliedacross both the front surface of the mounting system 1612 and thesurrounding ceiling area at the same time.

FIG. 27 is a diagram illustrating a perspective view of the sign messagestructure 1605 shown in FIG. 16 with letters 1636 and arrows 1634implemented with electroluminescent panels according to one embodiment.In one example, each of the letters 1636 and arrows 1634 is implementedwith a separate electroluminescent panel, and the electroluminescentpanels are electrically coupled together and configured to be coupled toa power source via electrical connections 2702. The sign messagestructure 1605 shown in FIG. 27 may also include attachment structures1632 (FIG. 16) and mounting columns 1628 and 1630 (FIG. 16).

FIG. 28 is a diagram illustrating a front view of a letter 1636 and anarrow 1634 of the sign message structure 1605 shown in FIG. 27 with theletter 1636 and the arrow 1634 implemented with separateelectroluminescent panels according to one embodiment. As shown in FIG.28, a clear silver conductive substrate 2802 is attached to a right endof the arrow 1634, and is configured to be attached to the left end ofthe letter 1636. The conductive substrate 2802 includes cavities 2804(1)and 2804(2) sized to receive a left end of the springs 2814(1) and2814(2) therein, respectively. The conductive substrate 2802 alsoincludes a hole 2806 sized to receive the threaded portion of screw 2808therein. The left end of the letter 1636 includes cavities 2810(1) and2810(2) sized to receive a right end of the springs 2814(1) and 2814(2)therein, respectively. The left end of the letter 1636 also includes athreaded cavity 2812 sized to receive the threaded portion of screw 2808therein. After arrow 1634 is attached to letter 1636 by inserting screw2808 into hole 2806 and screwing the screw 2808 into the threaded cavity2812, the spring 2814(1) is compressed between cavities 2804(1) and2810(1), and the spring 2814(2) is compressed between cavities 2804(2)and 2810(2).

FIG. 29 is a diagram illustrating additional details of the sign messagestructure 1605 shown in FIG. 27 with letters 1636 and arrows 1634implemented with electroluminescent panels according to one embodiment.Clear silver conductive substrates 2902 extend from an end of each ofthe arrows 1634. A metal conductive lug 2904 extends from the end ofeach of the conductive substrates 2902. Conductive lugs 2906 extend fromtwo of the letters 1636, and are configured to be coupled to theconductive lugs 2904 of the arrows 1634. A clear silver conductivebi-layer invisible wiring substrate 2912 interconnects the letters 1636to each other, and is configured to be coupled to a power source. At thetop left and top right corners of the sign message structure 1605, thesubstrate 2912 extends upward, and clear polycarbonate support posts2910 are laminated to the upwardly extending portions of the substrate2912. The substrate 2912 includes metal conductive offset splices 2908that are coupled to dual redundant power input conductors 2914 toprovide power to each of the letters 1636 and arrows 1634.

One example is directed to a light fixture sign that includes a signmessage structure including letter-shaped structures. The light fixturesign includes an illumination source to generate light to be projectedthrough a front surface of the letter-shaped structures. The lightfixture sign includes at least one reflective mirror having a firstsurface attached over a back surface of the letter-shaped structures anda reflective surface opposite the first surface to reflect light.

The sign message structure may include at least one clear plasticconnection structure to securely hold the letter-shaped structurestogether to define a message. The light fixture sign may include atleast one mounting column extending from the sign message structure tomount the sign message structure to a wall or ceiling. The at least onemounting column may extend from a top of the sign message structure tomount the sign message structure to a ceiling. The at least one mountingcolumn may extend from a left or right end of the sign message structureto mount the left or right end of the sign message structure to a wall.The sign message structure may be configured to be mounted to a glasswindow.

The light fixture sign may include a container coupled to the signmessage structure to provide power for the illumination source, whereinthe container is configured to be installed inside an opening in a wallor ceiling. The light fixture sign may include a mounting system toconceal the container behind the wall or ceiling and facilitate mountingthe sign message structure to the container. The mounting system may beconfigured to be mounted flush to the wall or ceiling, and may be fieldpaintable to match a finish of the wall or ceiling. The container mayinclude a spring-loaded shock absorbing mechanism that allows the signmessage structure to move if subject to contact by an external force.The illumination source may comprise a plurality of light emittingdiodes (LEDs) positioned inside of each of the letter-shaped structures.The light fixture sign may be a light fixture exit sign. Theletter-shaped structures may include at least one electroluminescentpanel.

Another example is directed to a light fixture sign that includes a signmessage structure including letter-shaped structures with internalillumination elements to generate light to be projected through a frontsurface of the letter-shaped structures. The light fixture sign includesa container coupled to the sign message structure to provide power forthe internal illumination elements, wherein the container is configuredto be installed completely within a recess in a wall or ceiling andconcealed from view.

The sign message structure may include at least one connection structureto securely hold the letter-shaped structures together to define amessage. The sign message structure may include at least one reflectivemirror having a first surface attached over a back surface of theletter-shaped structures and a reflective surface opposite the firstsurface to reflect light. The light fixture sign may include at leastone mounting column extending from the sign message structure to connectthe sign message structure to the container. The container may include aspring-loaded shock absorbing mechanism coupled to the at least onemounting column, wherein the shock absorbing mechanism allows the signmessage structure to move if subject to contact by an external force.The internal illumination elements may be light emitting diodes (LEDs).The light fixture sign may be a light fixture exit sign.

Although specific embodiments have been illustrated and describedherein, it will be appreciated by those of ordinary skill in the artthat a variety of alternate and/or equivalent implementations may besubstituted for the specific embodiments shown and described withoutdeparting from the scope of the present invention. This application isintended to cover any adaptations or variations of the specificembodiments discussed herein. Therefore, it is intended that thisinvention be limited only by the claims and the equivalents thereof.

What is claimed is:
 1. A light fixture sign, comprising: a sign messagestructure including letter-shaped structures; an illumination source togenerate light to be projected through a front surface of theletter-shaped structures; and at least one reflective mirror having afirst surface attached over a back surface of the letter-shapedstructures and a reflective surface opposite the first surface toreflect light.
 2. The light fixture sign of claim 1, wherein the signmessage structure includes at least one clear plastic connectionstructure to securely hold the letter-shaped structures together todefine a message.
 3. The light fixture sign of claim 1, and furthercomprising: at least one mounting column extending from the sign messagestructure to mount the sign message structure to a wall or ceiling. 4.The light fixture sign of claim 3, wherein the at least one mountingcolumn extends from a top of the sign message structure to mount thesign message structure to a ceiling.
 5. The light fixture sign of claim3, wherein the at least one mounting column extends from a left or rightend of the sign message structure to mount the left or right end of thesign message structure to a wall.
 6. The light fixture sign of claim 1,wherein the sign message structure is configured to be mounted to aglass window.
 7. The light fixture sign of claim 1, and furthercomprising a container coupled to the sign message structure to providepower for the illumination source, wherein the container is configuredto be installed inside an opening in a wall or ceiling.
 8. The lightfixture sign of claim 7, and further comprising a mounting system toconceal the container behind the wall or ceiling and facilitate mountingthe sign message structure to the container.
 9. The light fixture signof claim 8, wherein the mounting system is configured to be mountedflush to the wall or ceiling, and is field paintable to match a finishof the wall or ceiling.
 10. The light fixture sign of claim 7, whereinthe container includes a spring-loaded shock absorbing mechanism thatallows the sign message structure to move if subject to contact by anexternal force.
 11. The light fixture sign of claim 1, wherein theillumination source comprises a plurality of light emitting diodes(LEDs) positioned inside of each of the letter-shaped structures. 12.The light fixture sign of claim 1, wherein the light fixture sign is alight fixture exit sign.
 13. The light fixture sign of claim 1, whereinthe letter-shaped structures comprise at least one electroluminescentpanel.
 14. A light fixture sign, comprising: a sign message structureincluding letter-shaped structures with internal illumination elementsto generate light to be projected through a front surface of theletter-shaped structures; and a container coupled to the sign messagestructure to provide power for the internal illumination elements,wherein the container is configured to be installed completely within arecess in a wall or ceiling and concealed from view.
 15. The lightfixture sign of claim 14, wherein the sign message structure includes atleast one connection structure to securely hold the letter-shapedstructures together to define a message.
 16. The light fixture sign ofclaim 14, wherein the sign message structure includes at least onereflective mirror having a first surface attached over a back surface ofthe letter-shaped structures and a reflective surface opposite the firstsurface to reflect light.
 17. The light fixture sign of claim 14, andfurther comprising: at least one mounting column extending from the signmessage structure to connect the sign message structure to thecontainer.
 18. The light fixture sign of claim 17, wherein the containerincludes a spring-loaded shock absorbing mechanism coupled to the atleast one mounting column, wherein the shock absorbing mechanism allowsthe sign message structure to move if subject to contact by an externalforce.
 19. The light fixture sign of claim 14, wherein the internalillumination elements are light emitting diodes (LEDs).
 20. The lightfixture sign of claim 14, wherein the light fixture sign is a lightfixture exit sign.